$OpenBSD: patch-src_tools_trackgen_CMakeLists_txt,v 1.2 2014/07/11 15:10:39 pascal Exp $
--- src/tools/trackgen/CMakeLists.txt.orig	Wed Jun 18 16:20:25 2014
+++ src/tools/trackgen/CMakeLists.txt	Fri Jul 11 14:32:00 2014
@@ -45,6 +45,7 @@ ENDIF(MINGW)
 
 IF(UNIX)
     SD_INSTALL_FILES(MAN man6 PREFIX ${SOURCE_DIR}/doc/man FILES ${_TARGET_NAME}.6)
+    INCLUDE_DIRECTORIES(${X11_INCLUDE_DIR})
 ENDIF(UNIX)
 
 SD_INSTALL_FILES(BIN TARGETS ${_TARGET_NAME})
